Yarn-package and method of winding same.



G. W. FOSTERL YARN PACKAGE AND METHOD 0F WINDING SAME APPLICAUON FILED FEB.191916 m Patented July 10, 19W.

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G. W. FOSTER.

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APPLICATION FILED FEB. 19. I9I6. y Im l Patented July 10, 1917.

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G. W. FOSTER.

YARNPACKAGE AND METHOD 0F -WINDING SAME.

APPLICATION FILED rsa. I9. Isla.

m. Patented July 10, 1917.

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which the followin is a specification.

,mueran srarns rarunr ortica 1 GEORGE W. FOSTER, (IMF` PROVIDENCE, RHUDE ISLAND.

YARN-PACKAGE AND METHOD OF WINE-)ING SAME.

i Patented July limiet?. 'Application tiled February 19, 1916.V Serial No. 79,412.

119233,@41. Specification of Letters Patent.

To all whom t may concern.'

Be it known that I, Gnonon W. Fos'rER, a ferent from w at has been previously lprocitizen of the United States, residing at posed and is an improvement thereover as Providence, in the county of Providence, more fully explained hereinafter. State of Rhode lsland, have invented cer- The manner of carrying out the improvetain new and useful Improvements in Yarnvment is fully described in the following Packages and Methods-of Winding Same, of specification, illustrated b the accompany# ing drawlngs, in which 1i e reference char- My invention re ates to improvements in acters designate like parts. In the drawcross-wound cone-packages of arn or other ings textiles and the method of win ing the same. -Figu're 1 is a view of the completed cone The object of my improvement is to prolllustrating the increase in the taper of the vide a yarn-cone or package from which the layers of winding from its interior to its material will deliver more freely and evenly, exterior; in unwindin it over the end, with a more Fig. 2, a view of a partly wound cone uniform tenslon and with less liability of the showing a stage of the winding where the yarn being strained or broken. traverse of the yarn is progressively short- With this end in view my improvement ened toward the base of the cone to build consists essentially in building up the yarnup a greater thickness of yarn at this end; mass on a conical tube or holdery in suchl Fig. 3, a more or less diagrammatic view manner that the taper of the cone is gradillustrating one-half of the cone in section ually increased as the winding grows in taken on its axis and showing the arrangediameter so that the outer layers are more ment of the shortened courses therein; and inclined to the axis of the cone than the Fig. 4, a diagrammatic plotting of the inner ones. That is to say, the yarn is built traverse of the windings showing how they creasing the taper of the cone is entirelydifup faster at the large end of the cone Jthan' are progressively shortened and lengthened I at its small end so that the mass is thicker at intervals in the building of the cone.

at the base than at the apex with a corre- It is to be understood that the term sponding increase in the taper of the layers yarn as employed in the description is of winding from start to finish of the cone. used in a general sense to designate any at- The mechanism for buildin the cone in actenuated material such as fibers, threads, coi-dance with the hereinescribed method twine, cord, silk, and other' strands of a like is described in my copending application for nature. Referring to the drawings, it is the patent, Serial No. 90,447, filed A'pril 11, usual practice to wind yarn and'other tex- 1916, tiles on conical tubes or holders of paper, it has before been proposed to wind yarnfiber, wood or like 'material which may be cones with a gradually increasing taper from either hollow or solid and arel generally start to finish of the winding, but heretoadapted to fit onto a winding mandrel or fore this has been accomplished in an enspindle. In Figs. 1, 2 and 3 l have illustirely di'erent manner from the present imtrated my improved cone C as built up on proved method. One way of increasing 'the a hollow paper tube T of conventional taper taper of the cone duringthe winding is to having its smaller end t rounded over to apply a greater amount of pressure on its provide a smooth surface for the yarn to surface at the small end than at its base to \draw across in unwinding from the inner compact the yarn-mass at the apex; while layers. It isof advantage, of course, to

.another method of securing the same result employ a tube or holder of relatively great is to wind the yarn with closer coils at the taperl in order to facilitate the drawing off base end than at the apex to build upa of the coils of yarn therefrom in unwinding greater mass of material at the large end of it, but in practice there is a maximum limit the cone. This latter method of winding as to the conicality of the holder which must contemplates the changing of the angle of be observed. That is to'say, the larger or the turns or coils of the yarn in winding base -end of the cone-tube must be kept from one end of the cone to the other, as within reasonable dimensions, or otherwise described in my United States Letters Patit would cause the whole cone-package to ent No. 766,17 5, granted IAug. 2, 1904.' As bulk too large; and another point to be conl before stated, the present method of insidered is the maximum taper on whichit is i so 'practical-to wind the material.

In other words, if the taper of the holder on which the first layers of winding are laid is too steep the coils of yarnwill slip down out of place and therefore a stable structure can not Vbe' secured. It is a well known fact that it is more diicult to maintain the coils in position on a surface of small diameter than on one of large-dimension, so that, 1n accordance with this principle, as the Winding increases'in diameter the ltaper of the cone may be increasedwithout detrimental resuits. In View of this a certain taper for the cone-tube or holder is adopted as a standard and to provide for greater freedom 1n delivery of the yarn from the outer layers of the cone the inclination of the layers 1s gradually increased throughout the winding.

In my present improvementI provide for this increase in thev taper of the cone by building up more yarn toward its .base end than at its small end in the followln'g manner: Referring to Fig. 3, I'first wind the yarn on the cone-tube T with a series of layers or courses a-c of uniform length, and preferably the ends of the layers will aline in a plane slightly inclined to the axis of the cone, as here shown7 so that the base. b

of the cone will be somewhat convex in form while its smaller or nose end n will assume a concaved shape, see Fig. 1. This concavoconvex shaping of the ends of the cone 1s not material to the present inventlon, however, and usually occurs' only in drumwound packages, so-called. After a certain thickness of yarn has been laid on the tube T in the above described manner, as indicated by the inclosing lines designated c-c, c-c, in Fig. 3, I commence the shortening of the traverse of the yarn to lay a series of stepped-back courses l, etc. It will be understood that the yarn winds back to the base end I) ofthe cone at each and every traverse but at the forward or nose end the course of the yarn is progressively shortened from time to time. This shortening of the traverse continues progressively until finally the course of the yarn is considerably less than the full length of the cone, the shortest courses being about onehalf the full traverse as illustrated in Figs.

'2 and At this point the'traverse of the `yarn is lengthened lagain to a slight extent yarn is once more progressively shortened to wind the stepped courses Z3-Z3, etc., and then increased progressively to lay the overlapping courses Zt-Z4 until finally the full length of traverse is reached once more in the layers ca -c3. Thereafter the length of the layers remains constant and the cone is completed to its full diameter with the maximum traverse of the yarn.

Referring still to Fig. 3, it will be seen that the mass of yarn in the cone is thus built up in three overlying sections comprising courses of uniform length separated by intermediate sections consisting of courses of graduated lengths. In this manner the intermediate portlons of the winding constitute approximately wedge-shaped masses intervening at different points between the main layers of the cone. The effect of interposing these shortened courses in the cone, as will be readily understood, is to build up more yarn at its base and consequently to increase the taper of the surface on which the winding is being performed. In this waythe inclination of the layers of winding in the cone is gradually increased from the interior to its'outside for the purpose as previously explained. It will be understood, of course, that where the yarn has a tendency to accumulate in any one part of the mass its natural elasticity or softness will cause it to be smoothedy ont so that the surface of the cone is kept truc. and regular throughout all portions of the winding. Furthermore, each shortened course comprises but a relatively small number of coils of yarn, not enough in any instance to complete a full layer, so` that there is no appreciable line of demarcation at the ends of the shortened traverses; the definition betweenl the courses of the yarn shown in Fig. 3 beingvexaggerated to make clearer the method of shortening the traverses. As a matter of fact the preferred practice. is to shorten the traverse of the yarn gradually instead of Awith a step-by-step motion so thateach shortened course merges into the next one without any distinction therebetween. It is also to be noted that the manner of proportioning the' courses of the winding as here shown is only illustrative of a preferred system, the arrangement beingarbitrary and usually determined by experiment as to the method which gives the best results.

Fig. 4 illustrates the progressive shortening and lengthening of the traverse. of the windings more graphically and willperhaps give a clearer understanding of the invention. The change in the length of the courses of winding in the cone is effected through an automatic regulation of the length of traverse lof the thread-guide which deposits the .coils of yarn in place and the method of operation of the guide is as follows: Beginning at the bottom of Fig. 4, the yarn is first traversed the full length of the cone from vto a2', back to m2, then to w3 and so on until a considerable number of layers have been deposited in place, approximately naaaoai one-third of the whole mass surrounding the tube T as shown in Fig. 3. At this point the traverse of the yarn-guide is automatically shortened to a slight extent and the coils or turns of yarn are laid from a point m4 at the base of the conelto a point ai at the opposite end. After one or more traverses of the yarn have been made to this extent the length 'of traverse ofthe yarn-gulde is again shortened so that it winds from ai -to wf' and after another brief interval it 1s once more shortened-to extend between the points ms-. This reduction in the length of the traverse is repeated from time to time in accordance with any preferred system and eventually the minimum length of traverse is reached at .rnb-w11. At this point the traverse is increased in length at intervals as shown by the lines x12-m15, I until nally the full length is reached once more at w1"-w. From this point the winding is performed with traverses of uniform length as represented by the lines en -w, {U17-em, etc., until another considerable section has been added to the mass, and the shortening of tl e traverse is then commenced again and continued as first described. After another section of shortened courses is added to the winding the traverse assumes its maximum extent once more and the cone is then completed with layers of full length.

While l have herein illustrated my irnproved cone with two interposed sections of shortened courses, in some instances it may be preferable toprovidea greater number to obtain a more gradual sloping of the surface of the winding. Likewise in some cases it might be found expedient to shorten the courses of the yarn clear back to the base of the cone or to arrange them in diderent relation, but such slight modifications would/ come within the spirit and scope of the present invention. Therefore, having now fully set forth the object of my improvement and the manner and method of its attainment, what claim is i. An improved `yarn-cone consisting of a series of superimposed layers arranged about a central conical support with portions of the mass wound with a maximum traverse equal to the full length of the cone, and intervening portions composed of courses of yarn-coils of decreasing and increasing length disposed to build the cone with a gradually increased taper in the man-` ner and for the purpose substantially as described. y

2. An improved cone-package consisting of a body of yarn or like material wound in crossed helices about an axial tube or core with certain of the courses of the yarn coils laid with a traverse equal to the full length of the cone, and other courses gradually shortened toward the base 0f the cone at intervals of theirinding to cause the mass to of a body crossed helices about an axial support with the package composed of al.14 *mit x sections of the vwhereby the outer have a greater inclination to 'the full length be built up with an increasing taper from its center to its exterior in the manner an for the purpose substantially as described.

3. An improved cone-package consisting o yarn or like material woundin the main body of complete layl ers of yarn coils extending the full length` of the package, and intervening courses of the yarn progressively shortened and then lengthened at the small end of the cone, to cause the surface of the. mass to assume a gradually increasing taper from the interior to the exterior of the cone to adapt the yarn to deliver more freely therefrom.

4'. An improved yarn-package woundin the form of a truncated cone with the coils of yarn laid in crossed helices built up in superimposed layers, the majority of the layers extending the full length of the cone,

and series of courses of gradually decreasing and increasing length interposed between the of the yarn-mass cone.

5. An improved yarn-package consisting of a body of material built up in the form of a truncated cone and comprising superimposed layers of crossed coils with the major portion of the courses of the yarn extending the full length of the cone, and other courses of the yarn being progressively shortened at the small end of the. cone layers of during the winding of the cone than the inner ones.

6. An improved yarn-package consisting of a body of material built up in the form of a truncated cone comprising superimposed layers of crossed coils, with the main portion of the courses of the yarn extending of the cone and intervening courses of the yarn of graduated length extending from the base only part way to the I t full lay'ers t0 eHect a progresslve increase in the taper of the surface the yarn will the axis of the opposite end of the cone and forming' substantially wedge-shaped sections interposed in the mass whereby the taper of the cone is greater at its exterior than at its interior.

7. An improved method of winding conical yarn-packages consisting in first winding a series of courses of crossed coils of uniform traverse on a central support, next winding a series of courses of progressively shortened traverse on the first wound mass, then increasing the length of the courses to the maximum traverse again, and repeating the shortening and lengthening of the trav lerse at intervals to cause the surface of the winding to assume an increasing taper throughout the building of the cone.

8. An improved method of winding conical yarn-packages consisting in laying the yarn in crossed helices on a central support with series of courses of a maximum travfrom the interior to the outside of the packerse, and intervening series of c ourses of` age.. A progressively lessened traverse, said courses l0. An improved method of winding coniof shortened traverses al1 extending clear cal yarn-packages consisting in first laying 5 to the base end .of the cone but stepped back a series of courses of crossed coils on a conifrom the opposite or apex end, whereby the cal holder until .the winding assumes a precone is built up With a'gradually-increasing determined diameter, next winding on the 25 taper from start to finish of the winding. yarn in a series of courses with the traverse 9. AIL improved method of Winding coniprogressively shortened toward the base l0 cal yarn-packages consisting in laying the end of the cone, then progressively increasyarn in crossed helices on an axial support ing the traverse of the courses until the with a. maximum traverse, and at intervals maximum is reached, next Winding another' 80 ofthe Winding progressively shortening and series of full length courses, again progreslengthening the traverse of the yarn at the. sively decreasing and increasing the length l5 small'end of the cone, whereby a greater of the courses'and finally completing the mass of yarn is deposited at th'e base end of cone With courses of maximum length. the cone than at the opposite end to increase In testimony whereof I affix' my signature. 35 the taper of the lsurface of the winding f GEORGE W. FOSTER. 

